Service & Repair Manual

24-118
Display fields
1 2 3 4
Display group 041: Oxygen sensor heating (bank 1) at idle
Display xxx kOhm
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xxx kOhm
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Indicated Bank 1, sensor 1
Condition of heating
Bank 2, sensor 1
Condition of heating
Functional range
Htng. bef. cat. ON
Htng. bef. cat. OFF
Htng. beh. cat. ON
Htng. beh. cat. OFF
Specified value 0 to 0.9 kOhm
Htng. bef. cat. ON/OFF
0 to 0.9 kOhm
Htng. beh. cat. ON/OFF
Important notes to display fields 1, 2, 3 and 4:
If oxygen sensors have not yet reached their operating temperature, there will be no indication in display fields 1 and 3,
i.e. they will both be empty. (increase engine speed to obtain specified values).
After reaching operating temperature of the two oxygen sensors, a resistance of less than 0.9 kOhm must be indicated in
display fields 1 and 3.
Do not continue test until a resistance of less than 0.9 kOhm is indicated in display fields 1 and 3.
At certain points of operation, the ECM "pulses" oxygen sensor heating. This means that oxygen sensor heating is
switched on and off at these points. It is entirely possible that the specified value "Htng. bef. Cat. OFF" or "Htng. beh. Cat.
OFF" will appear in display fields 2 and 4
- Press -C- button.
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